From: Peter Zijlstra <peterz@infradead.org>
To: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
linux-kernel@vger.kernel.org,
Indu Bhagat <indu.bhagat@oracle.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
linux-perf-users@vger.kernel.org, Mark Brown <broonie@kernel.org>,
linux-toolchains@vger.kernel.org, Jordan Rome <jordalgo@meta.com>,
Sam James <sam@gentoo.org>,
linux-trace-kernel@vger.kerne.org,
Andrii Nakryiko <andrii.nakryiko@gmail.com>,
Jens Remus <jremus@linux.ibm.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Florian Weimer <fweimer@redhat.com>,
Andy Lutomirski <luto@kernel.org>
Subject: Re: [PATCH v3 08/19] unwind/x86: Enable CONFIG_HAVE_UNWIND_USER_FP
Date: Tue, 29 Oct 2024 19:08:38 +0100 [thread overview]
Message-ID: <20241029180838.GF14555@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20241029163110.xf5o2bvfbfcenlla@treble.attlocal.net>
On Tue, Oct 29, 2024 at 09:31:10AM -0700, Josh Poimboeuf wrote:
> On Tue, Oct 29, 2024 at 02:13:03PM +0100, Peter Zijlstra wrote:
> > > +#define ARCH_INIT_USER_FP_FRAME \
> > > + .ra_off = (s32)sizeof(long) * -1, \
> > > + .cfa_off = (s32)sizeof(long) * 2, \
> > > + .fp_off = (s32)sizeof(long) * -2, \
> > > + .use_fp = true,
> > > +
> > > +#endif /* _ASM_X86_UNWIND_USER_H */
> >
> > What about compat / 32bit userspace?
>
> Sframe doesn't support 32-bit binaries at the moment. Does anybody
> actually care?
Dunno, I think the only 32bit code I've recently ran is in selftests and
wine32 -- because Monkey Island rules :-)
> You're right this regresses existing perf behavior for the frame pointer
> case. I'll try to fix that.
Thanks, this patch is the frame pointer unwinder, that really should do
32bit.
next prev parent reply other threads:[~2024-10-29 18:08 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 21:47 [PATCH v3 00/19] unwind, perf: sframe user space unwinding Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 01/19] x86/vdso: Fix DWARF generation for getrandom() Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 02/19] x86/asm: Avoid emitting DWARF CFI for non-VDSO Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-30 17:19 ` Jens Remus
2024-10-30 17:51 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 03/19] x86/asm: Fix VDSO DWARF generation with kernel IBT enabled Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 04/19] x86/vdso: Use SYM_FUNC_{START,END} in __kernel_vsyscall() Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 05/19] x86/vdso: Use CFI macros in __vdso_sgx_enter_enclave() Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 06/19] x86/vdso: Enable sframe generation in VDSO Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-30 18:20 ` Jens Remus
2024-10-30 19:17 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 07/19] unwind: Add user space unwinding API Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-12-06 10:29 ` Jens Remus
2024-12-09 20:54 ` Josh Poimboeuf
2024-12-11 14:53 ` Jens Remus
2024-12-11 17:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 08/19] unwind/x86: Enable CONFIG_HAVE_UNWIND_USER_FP Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-29 13:13 ` Peter Zijlstra
2024-10-29 16:31 ` Josh Poimboeuf
2024-10-29 18:08 ` Peter Zijlstra [this message]
2024-10-28 21:47 ` [PATCH v3 09/19] unwind: Introduce sframe user space unwinding Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-29 13:27 ` Peter Zijlstra
2024-10-29 16:50 ` Josh Poimboeuf
2024-10-29 18:10 ` Peter Zijlstra
2024-10-29 23:32 ` Andrii Nakryiko
2024-10-30 5:53 ` Josh Poimboeuf
2024-10-31 20:57 ` Andrii Nakryiko
2024-10-31 21:00 ` Nick Desaulniers
2024-10-31 21:38 ` Indu Bhagat
2024-11-01 18:38 ` Andrii Nakryiko
2024-11-01 18:47 ` Steven Rostedt
2024-11-01 18:54 ` Andrii Nakryiko
2024-11-03 0:07 ` Indu Bhagat
2024-10-31 23:03 ` Josh Poimboeuf
2024-11-01 18:34 ` Andrii Nakryiko
2024-11-01 19:29 ` Josh Poimboeuf
2024-11-01 19:44 ` Andrii Nakryiko
2024-11-01 19:46 ` Andrii Nakryiko
2024-11-01 19:51 ` Josh Poimboeuf
2024-11-01 19:09 ` Segher Boessenkool
2024-11-01 19:33 ` Josh Poimboeuf
2024-11-01 19:35 ` Josh Poimboeuf
2024-11-01 19:48 ` Josh Poimboeuf
2024-11-01 21:35 ` Segher Boessenkool
2024-11-05 17:40 ` Steven Rostedt
2024-11-05 17:45 ` Steven Rostedt
2024-11-06 17:04 ` Jens Remus
2024-11-07 8:25 ` Weinan Liu
2024-11-07 16:59 ` Jens Remus
2024-11-13 20:50 ` Steven Rostedt
2024-11-13 21:15 ` Josh Poimboeuf
2024-11-13 22:13 ` Steven Rostedt
2024-11-13 22:21 ` Steven Rostedt
2024-11-13 22:25 ` Steven Rostedt
2024-11-14 9:57 ` Jens Remus
2024-11-13 15:56 ` Jens Remus
2024-11-13 20:50 ` Steven Rostedt
2024-11-13 21:13 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 10/19] unwind/x86: Enable CONFIG_HAVE_UNWIND_USER_SFRAME Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-29 13:14 ` Peter Zijlstra
2024-10-28 21:47 ` [PATCH v3 11/19] unwind: Add deferred user space unwinding API Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-29 13:48 ` Peter Zijlstra
2024-10-29 16:51 ` Josh Poimboeuf
2024-10-29 13:49 ` Peter Zijlstra
2024-10-29 17:05 ` Josh Poimboeuf
2024-10-29 18:11 ` Peter Zijlstra
2024-10-29 13:56 ` Peter Zijlstra
2024-10-29 17:17 ` Josh Poimboeuf
2024-10-29 17:47 ` Mathieu Desnoyers
2024-10-29 18:20 ` Peter Zijlstra
2024-10-30 6:17 ` Steven Rostedt
2024-10-30 14:03 ` Peter Zijlstra
2024-10-30 19:58 ` Steven Rostedt
2024-10-30 20:48 ` Josh Poimboeuf
2024-10-29 18:34 ` Josh Poimboeuf
2024-10-30 13:44 ` Mathieu Desnoyers
2024-10-30 17:47 ` Josh Poimboeuf
2024-10-30 17:55 ` Josh Poimboeuf
2024-10-30 18:25 ` Josh Poimboeuf
2024-10-29 23:32 ` Andrii Nakryiko
2024-10-30 6:10 ` Josh Poimboeuf
2024-10-31 21:22 ` Andrii Nakryiko
2024-10-31 23:13 ` Josh Poimboeuf
2024-10-31 23:28 ` Andrii Nakryiko
2024-11-01 17:41 ` Josh Poimboeuf
2024-11-01 18:05 ` Andrii Nakryiko
2024-10-28 21:47 ` [PATCH v3 12/19] perf: Remove get_perf_callchain() 'init_nr' argument Josh Poimboeuf
2024-10-28 21:47 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 13/19] perf: Remove get_perf_callchain() 'crosstask' argument Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 14/19] perf: Simplify get_perf_callchain() user logic Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 15/19] perf: Add deferred user callchains Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-29 14:06 ` Peter Zijlstra
2024-11-06 9:45 ` Jens Remus
2024-10-28 21:47 ` [PATCH v3 16/19] perf tools: Minimal CALLCHAIN_DEFERRED support Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 17/19] perf record: Enable defer_callchain for user callchains Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 18/19] perf script: Display PERF_RECORD_CALLCHAIN_DEFERRED Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:47 ` [PATCH v3 19/19] perf tools: Merge deferred user callchains Josh Poimboeuf
2024-10-28 21:48 ` Josh Poimboeuf
2024-10-28 21:54 ` [PATCH v3 00/19] unwind, perf: sframe user space unwinding Josh Poimboeuf
2024-10-28 23:55 ` Josh Poimboeuf
2024-10-29 14:08 ` Peter Zijlstra
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